19841991

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{12409}}^1$

素因数の和:12466

約数の個数: 16

約数和(自身を含む): 29188320

約数和(自身を除く): 9346329

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 12409, 37227, 161317, 483951, 508769, 1526307, 6613997, 19841991]

約数ペア:

[(1, 19841991), (3, 6613997), (13, 1526307), (39, 508769), (41, 483951), (123, 161317), (533, 37227), (1599, 12409)]